Police ID Delavan stabbing victim, suspect

Delavan police and Walworth County sheriffs responded to a disturbance at this apartment at 509 Lawson School Road in Delavan early on May 4. Police say the apartment resident, Ivan Guerrero, 31, was fatally stabbed by his cousin, Rafael Olivarez. Photo by Andrea Anderson/aanderson@gazettextra.com

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DELAVAN—Police identified two cousins involved in a fatal knife fight during a family argument early Sunday morning in a Delavan apartment.

Ivan Guerrero, 31, was identified by investigators as the man who was stabbed, and later died at a Janesville hospital. Police arrested Rafael Olivarez, 39, as a suspect in the stabbing.

Delavan police officers and Walworth County sheriffs responded to a disturbance at 3:17 a.m. Sunday at 509 Lawson School Road in Delavan, where Guerrero lived. Investigators say a family argument between the cousins led to the fight, and several people were in the apartment at the time, including one person who suffered minor injuries and was treated at the scene.